D&C 94

 As the Lord instructed the construction of a building for the Church presidency, He said - 

"...let the first lot on the south be consecrated unto me for the building of a house for the presidency, for the work of the presidency, in obtaining revelations; and for the work of the ministry of the presidency, in all things pertaining to the church and kingdom.

4 Verily I say unto you, that it shall be built fifty-five by sixty-five feet in the width thereof and in the length thereof, in the inner court.

5 And there shall be a lower court and a higher court, according to the pattern which shall be given unto you hereafter.

6 And it shall be dedicated unto the Lord from the foundation thereof, according to the order of the priesthood, according to the pattern which shall be given unto you hereafter.

7 And it shall be wholly dedicated unto the Lord for the work of the presidency.

8 And ye shall not suffer any unclean thing to come in unto it; and my glory shall be there, and my presence shall be there.

9 But if there shall come into it any unclean thing, my glory shall not be there; and my presence shall not come into it."  (Doctrine and Covenants 94:3–9)

The lord instructed that His glory would be there if no unclean entered.  My Dad worked for the Church in the historical department for most of his career.  He worked in the first office building and later at the high-rise office building.  I believe it had a great influence on his life.